Doctor of mathematics
数学博士
🧩 词语组成解析
doctor
['dɑktɚ]
n. 医生，大夫;博士;神学家;医疗设备;
vt.& vi. 医疗，行医;
vt. 修理，装配;假造;搀杂;修改，修饰;
doct教+or表名词，人→教的人→有学问的人→ 博士，医生
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
We were most impressed with your efficiency.
你的工作效率很高，我们极为钦佩。
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
After entering the narrow gap on the plateau, they climbed down the steep sides of the cave until they came to narrow corridor.
他们从高原上的窄缝进去，顺着笔直陡峭的洞壁往下爬。来到一条狭窄的走廊上。